ASSOCIATIVE ADJUSTMENTS TO REDUCE ERRORS IN DOCUMENT SCREENING
Abstract
Associative adjustments to a document file were considered as a means for improving retrieval. The investigation includes the definition and theoretical investigation of the statistical properties of a generalized mismatch measure. Improvements in retrieval resulting from performing associative regression adjustments on data file are examined both from the theoretical and experimental point of view. The expected gain in mismatch is presented as a function of various measurable characteristics of the file, such as error rates in indexing and the probability distributions of the associative adjustment criteria. Query adjustments using negative as well as positive correlations are considered and found to be ineffective. In a limited site Patent Office file with a low indexing error rate experimental results are presented applying (1) no associative correction (2) the generalized mismatch with no associative correction (3) associative correction and (4) query adjustment. In general the results using the ordinary mismatch with an associative adjustment are superior to those using the more generalized quadratic mismatch or the query adjustment scheme.
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 31, 1967
- Accession Number
- AD0651630
Entities
People
- David G. Weinman
- Donald T. Searls
- Edward C. Bryant
- Robert H. Shumway
Organizations
- Westat